/*
 * Copyright 2025 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.alibaba.cloud.ai.manus.tool.browser;

import com.microsoft.playwright.Page;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import java.util.List;
import java.util.Optional;

/**
 * Utility class specialized in handling interactive text elements in web pages. Provides
 * functionality for finding, analyzing and processing text content in web pages. Uses
 * InteractiveElementRegistry to manage all interactive elements in the page, providing
 * global index access capability.
 */
public class InteractiveTextProcessor {

  private static final Logger log = LoggerFactory.getLogger(InteractiveTextProcessor.class);

  /**
   * Store and manage interactive elements in the page
   */
  private final InteractiveElementRegistry elementRegistry;

  /**
   * Constructor
   */
  public InteractiveTextProcessor() {
    this.elementRegistry = new InteractiveElementRegistry();
  }

  /**
   * Refresh all interactive elements in the page, including those in iframes
   *
   * @param page Page to process
   */
  public void refreshCache(Page page) {
    // Use registry to refresh page elements
    elementRegistry.refresh(page);
    log.info("Refreshed page elements, found {} interactive elements", elementRegistry.size());
  }

  /**
   * Get interactive element at specified index
   *
   * @param index Global index
   * @return Interactive element corresponding to this index, returns empty if not
   * exists
   */
  public Optional<InteractiveElement> getElementByIndex(int index) {
    return elementRegistry.getElementById(index);
  }

  /**
   * Get list of all interactive elements
   *
   * @return List of interactive elements
   */
  public List<InteractiveElement> getAllElements(Page page) {
    return elementRegistry.getAllElements(page);
  }

  /**
   * Click element at specified index
   *
   * @param index Element global index
   * @return Whether operation was successful
   */
  public boolean clickElement(int index) {
    return elementRegistry.performAction(index, element -> {
      element.getLocator().click();
      log.info("Clicked element at index {}: {}", index, element.toString());
    });
  }

  /**
   * Fill text in input element at specified index
   *
   * @param index Element global index
   * @param text  Text to fill
   * @return Whether operation was successful
   */
  public boolean fillText(int index, String text) {
    return elementRegistry.performAction(index, element -> {
      element.getLocator().fill(text);
      log.info("Filled text in element at index {}: {}", index, text);
    });
  }

  /**
   * Get detailed information of all interactive elements in the web page
   *
   * @return Formatted element information string
   */
  public String getInteractiveElementsInfo(Page page) {
    return elementRegistry.generateElementsInfoText(page);
  }

  /**
   * Get total number of interactive elements
   *
   * @return Element count
   */
  public int getElementCount() {
    return elementRegistry.size();
  }

  /**
   * Execute custom operation based on element index
   *
   * @param index  Element index
   * @param action Operation to execute
   * @return Whether operation was successful
   */
  public boolean performAction(int index, InteractiveElementRegistry.ElementAction action) {
    return elementRegistry.performAction(index, action);
  }

}
